https://devzone.nordicsemi.com/f/nordic-q-a/24282/nrf24l01--health-concernsHi, nRF24L01 seems like a perfect choice for home automation project that I have in mind .. I will have to install about 20 of those around the house. My question is - do they transmit anything when there is no data to be transmitted ? Are theyen-USTelligent Community 13Fri, 11 Aug 2017 14:14:00 GMThttps://devzone.nordicsemi.com/thread/95575?ContentTypeID=1Fri, 11 Aug 2017 14:14:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dcc7fe02-11a5-472c-856b-96bed076045dAstalor<p>Thank you, this was very helpful</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/95574?ContentTypeID=1Fri, 11 Aug 2017 14:11:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:baa2c28f-a2f3-41a9-899d-08a9ff27cbbfAmbystomaLabs<p>Also, assuming that the question was if there are health concerns over 20 transmitters in a house, then this would be covered by the SAR compliance for the product in question. The nRF24L01 is a 0dBm device which is below the 5mm limit for most, if not all, regulatory bodies.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/95573?ContentTypeID=1Fri, 11 Aug 2017 13:38:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:37fd1100-3c19-4aaa-9bb0-e25a48cc51cfJ&#248;rn<p>Hello Astalor</p> <p>Figure 11, page 37 of the nRF24L01P <a href="http://infocenter.nordicsemi.com/pdf/nRF24L01P_PS_v1.0.pdf">product specification</a> shows receiver operation. Either as long as it receives no valid data packets, No_ACK is set, and it has no response payload, the chip will only passively listen, and not transmit anything.</p> <p>Best regards</p> <p>Jørn Frøysa</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/95572?ContentTypeID=1Fri, 11 Aug 2017 13:29:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6621261e-36eb-408d-a763-174812ed9dd1AmbystomaLabs<p>Maybe you can restate your question? I don&#39;t see anything in your question about health concerns as you stated in the title.</p><div style="clear:both;"></div>